Solve x^2+12x=-11by completing the square which is the solution set of the equation A={-11,-1} B={-11,1} C={11,-1} D={11,1}

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Mathematics

6 January, 07:29

Solve x^2+12x=-11by completing the square which is the solution set of the equation A={-11,-1} B={-11,1} C={11,-1} D={11,1}

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Alexandria Ferguson · Answer 1

-11 and - 1

Step-by-step explanation:

x² + 12x = - 11

x² + 12x + 36 = - 11 + 36

(x+6) ² = 25

x + 6 = √25

x + 6 = 5

x = 5 - 6

x = - 1

x+6 = - 5

x = - 11